PlotlyJS.PlotlyBase.to_html() does not export a stand alone HTML

**Describe the bug**
_A clear and concise description of what the bug is._

I can not export a stand-alone / off-line-ready html-figure.
It is not clear, how to use the parameter `include_plotlyjs` correctly.
See also:
https://github.com/JuliaPlots/PlotlyJS.jl/issues/366

**Version info**

Please provide the following:

1. output of julia command `versioninfo()`
```
Julia Version 1.6.7
Commit 3b76b25b64 (2022-07-19 15:11 UTC)
Platform Info:
OS: Windows (x86_64-w64-mingw32)
CPU: Intel(R) Core(TM) i7-10510U CPU @ 1.80GHz
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-11.0.1 (ORCJIT, skylake)
Environment:
JULIA_SSL_CA_ROOTS_PATH =
JULIA_EDITOR = code
JULIA_NUM_THREADS =
```

2. _Output running the following in Julia 0.7 or greater: `using Pkg; pkg"status"` (if you are on Julia 0.6 or earlier run `Pkg.status()`)_
```
Status `C:\Users\stefanpofahl\.julia\environments\v1.6\Project.toml`
[093aae92] BSplineKit v0.11.3
[336ed68f] CSV v0.10.9
[7c7805af] Clapeyron v0.4.0
[8f4d0f93] Conda v1.7.0
[992eb4ea] CondaPkg v0.2.15
[e084ae63] CoolProp v0.1.0
[717857b8] DSP v0.7.8
[39dd38d3] Dierckx v0.5.2
[aac5d7a0] EquivalentCircuits v0.2.1 `https://github.com/MaximeVH/EquivalentCircuits.jl.git#master`
[7a1cc6ca] FFTW v1.5.0
[5789e2e9] FileIO v1.16.0
[a98d9a8b] Interpolations v0.14.7
[033835bb] JLD2 v0.4.29
[682c06a0] JSON v0.21.3
[b964fa9f] LaTeXStrings v1.3.0
[2b0e0bc5] LanguageServer v4.3.1
[5ad8b20f] PhysicalConstants v0.2.3
[a03496cd] PlotlyBase v0.8.19
[f0f68f2c] PlotlyJS v0.18.10
[438e738f] PyCall v1.95.0
[6099a3de] PythonCall v0.9.10
[274fc56d] PythonPlot v1.0.0
[295af30f] Revise v3.5.0
[d6ea1423] RobustModels v0.4.5
[cf896787] SymbolServer v7.2.1
[1986cc42] Unitful v1.12.2
[fdbf4ff8] XLSX v0.8.4
[de0858da] Printf
```